\name{data.frameORnull-class}
\Rdversion{1.1}
\docType{class}
\alias{data.frameORnull-class}

\title{Class \code{"data.frameORnull"}}
\description{
A data.frame or NULL
}
\section{Objects from the Class}{
This is a VIRTUAL class and objects of this class cannot be instantiated.
}
\keyword{classes}
